16945243 has 16 divisors (see below), whose sum is σ = 20680704. Its totient is φ = 13553280.

The previous prime is 16945241. The next prime is 16945267. The reversal of 16945243 is 34254961.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16945243 - 2¹ = 16945241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16945199 and 16945208.

It is not an unprimeable number, because it can be changed into a prime (16945241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15046 + ... + 16132.

It is an arithmetic number, because the mean of its divisors is an integer number (1292544).

Almost surely, 2^16945243 is an apocalyptic number.

16945243 is a deficient number, since it is larger than the sum of its proper divisors (3735461).

16945243 is a wasteful number, since it uses less digits than its factorization.

16945243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242.

The product of its digits is 25920, while the sum is 34.

The square root of 16945243 is about 4116.4600083081. The cubic root of 16945243 is about 256.8517921937.

The spelling of 16945243 in words is "sixteen million, nine hundred forty-five thousand, two hundred forty-three".